## Importing of equations to Mathcad from text file

## Importing of equations to Mathcad from text file

(OP)

Hi,

I have the following problem.

I have a system with about 10K of equations in the form:

x1x2+5x2x3-10x3x10-...-6x985x545=15

It's stored in text file. How to import it to Mathcad so that all indexes would become real Mathcad indexes so that I would be able to ask Mathcad to find the solution of such equations system? I'm trying simple copy-paste but it inserts it as separate fields and doesn't want to calculate it. When I tried to do some kind of import, it imports tables... whatever except what I want. Would really appreciate your help.

Thanks,

Oleg

I have the following problem.

I have a system with about 10K of equations in the form:

x1x2+5x2x3-10x3x10-...-6x985x545=15

It's stored in text file. How to import it to Mathcad so that all indexes would become real Mathcad indexes so that I would be able to ask Mathcad to find the solution of such equations system? I'm trying simple copy-paste but it inserts it as separate fields and doesn't want to calculate it. When I tried to do some kind of import, it imports tables... whatever except what I want. Would really appreciate your help.

Thanks,

Oleg

## RE: Importing of equations to Mathcad from text file

TTFN

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## RE: Importing of equations to Mathcad from text file

Great thanks for suggestion. I have Mathcad 14. I looked into XML generated by Mathcad for simple system of equations and the result didn't make me too happy :-) i'm not expert in XML (i'm specialist in embedded SW, not databases or XML stuff) so it wasn't easy to read. It's not trivial, but possible solution; are there any other thoughts on this?

Thanks,

Oleg

## RE: Importing of equations to Mathcad from text file

I'm not entirely sure that is solvable by Mathcad.

Cheers

Greg Locock

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## RE: Importing of equations to Mathcad from text file

Your understanding is right. In fact, 1/2 of equations have the form you mentioned, other part has a form sigma a(i)*x(j), and totally, to be precise, there would be 6.5K equations.

I tried to enter manually about 20 equations and Mathcad solved them pretty quickly. I don't think such computation would be too complex for him. Anyway, we wouldn't know that until importing the equations to Mathcad. And now i'm searching the best way to import them.

Thanks,

Oleg

## RE: Importing of equations to Mathcad from text file

http://www.ptc.com/forums/viewtopic.php?t=7095

Viacheslav Mezentsev has presented a 'text formula' converter that may be able to help you.

## RE: Importing of equations to Mathcad from text file

I looked into it but can't understand how to use it. After its hidden sources there are some examples, but I can't understand what the stuff under "text" in yellow is producing.

Thanks,

Oleg

## RE: Importing of equations to Mathcad from text file

Any other ideas/thoughts/suggestions?

Thanks,

Oleg

## RE: Importing of equations to Mathcad from text file

However, that is not what you appearing to asking for, since the Calc interpreter is actually doing the math, and not actually entering equations into Mathcad.

The previous suggestion of running a parser to generate the XML code for Mathcad is probably the cleanest way.

Alternately, a brute force approach is to use something like the SENDKEYS function in Visual Basic to take the text equations and send the equivalent keystrokes into the Mathcad user interface.

TTFN

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